丁鑫,陶庭叶,何蓉,陶征广

• 1:合肥工业大学土木与水利工程学院

摘要(Abstract)：

针对高频噪声、条带噪声和信号泄露的问题，该文利用DDK5去相关平滑滤波和逆高斯滤波方法处理GRACE月时变地球重力场数据。由于不同机构月时变地球重力场精度不同，该文首先推导出地表非潮汐负荷形变精度计算公式，并计算4种产品精度，总体上从高到低依次为GFZ、CSR、ITSG、JPL。另外，该文还将GRACE反演的地表非潮汐负荷形变与158个IGS站计算结果进行比较，计算两者相关性和一致性。结果表明：(1)有64%以上IGS站相关系数大于0.5,最高达到0.9,为BRAZ和HYDE站；(2)有84%以上IGS站存在一致性。总之，大部分IGS站GRACE与GNSS时间序列吻合较好，这说明利用GRACE重力卫星时间动态且空间连续地反演由于地表质量变化引起的非潮汐负荷形变具有一定的可行性。

关键词(KeyWords)： GRACE;非潮汐负荷形变;精度分析;GNSS

Abstract:

Keywords:

基金项目(Foundation): 安徽省自然科学基金项目(1808085MD105)

作者(Author): 丁鑫,陶庭叶,何蓉,陶征广

DOI: 10.16251/j.cnki.1009-2307.2022.04.008

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